Snowplow



May 7, 1940. s. L. KAESER SNOW PLOW Filed Nov. 10, 1939 2 Sheets-Sheet 1 IIII,

IIIII III INVENTOR GEO/FUEL. $1550 BY ATTOR EYS May 7, 1940.

s. L. KAESER SNOW PLOW II I INVENTOR 6270196 BY EYS Patented May 7, 1940 PATENT OFFICE SNOWPLOW George L. Kaeser, Hartford, Conn, assignor to Walsh Holyoke Steam Boiler Works, Inc., Holyoke, Mass, a corporation of Massachusetts Application November 10, 1939, Serial No. 303,839

3 Claims.

This invention relates to improvements in snowplows and more particularly to those plows which are provided on one or both sides of the plow-propelling vehicle with wings.

These wings are used at times to widen the path cleared by the plow and, in such case, the wings are set at a level close to that of the road being plowed. The wings are mounted to swing toward or away from the side of the plow-propelling vehicle to varythe width of the plowing effected thereby. These wings are also used to knock off the tops of the banks of snow thrown up by the plow. For this work the rear end of the wing is elevated. Sometimes each wing is bodily lifted so that its front end lies at a level substantially above the road being plowed and its rear end is lifted still higher. It has been the practice heretofore to effect the lifting of each wing by two sets of chain falls, one located near the rear of the wing and one near the front of the wing and both suspended from crane-like members fixed to the plow-propelling vehicle. To manipulate one of the wings two men are required, one to operate the rear set of chain falls and the other to operate the front set of chain falls.

This invention has for its object the provision of means whereby the lifting or lowering of both ends of the wing can be controlled from a single point, as for example at a point just to: the rear of the drivers seat, and by a single operation.

The invention will be disclosed with reference to the accompanying drawings, in which:

Fig. 1 is a small-scale side elevational view of a snowplow embodying the invention;

Fig. 2 is a fragmentary sectional plan View taken on the line 2--2 of Fig. l and drawn to a larger scale;

Fig. 3 is a sectional view taken on the line 33 of Fig. 2;

Fig. 4 is a fragmentarysectional plan view showing the universal joint connection between the rear end of the wing and the brace therefor;

Fig. 5 is a fragmentary sectional view taken on the line 5-5 of Fig. 6;

Fig. 6 is a fragmentary plan view showing the nected in any suitable way to a motor-driven vehicle T to be pushed thereby. The motordriven vehicle shown is a truck but any other kind of power means suitable for the purpose may be used as desired.

The present invention is concerned entirely with the means for controlling the wing or wings used in connection with the plow. As shown. herein, a single wing W is mounted on the truck T along one side thereof, having its front. end near the front end of the ballast-earning body B of the truck T. The particular location of the wing, fore and aft of the vehicle, may obviously be varied as desired. It will also be obvious that the wing may be used on either side of the truck or that wings may be provided on both sides of the truck as desired. There are shown herein certain provisions, as will later appear, which enable a second wing to be used on the opposite side of truck T if desired.

Suitably fixed to the truck at one side thereof and at a point between the front end. of the body B and the cab C of the truck is an upright member I0 (Fig. 1), herein shown as an I-beam. A duplicate member Ill (Fig. 7) is'shown on the other side of the truck to enable a wing to be used on that side of the truck, if desired. As shown, a pair of channel irons l I rest upon the top of and extend crosswise of the pair of longitudinally extending channel irons D which form part of the chassis of truck T. Two vertical angle irons 8 arefixed to each channel iron II and fixed also one to each of the channels D. At each end, these two channel irons H are interconnected at top and bottom by angle irons 9. The upright l0 abuts one pair of these angle irons 9 and is suitably fixed thereto. The upright lll'abuts the other pair of angle irons 9 and is suitably fixed thereto. A channel I2. (shown partially broken away in Fig. 6) interconnects the upper ends of the two uprights Ill and 10' and is suitably fixed thereto. The particular means shown for attaching these uprights to truck T are not important and any other suitable means may be used as desired.

The member It! forms a vertical slideway for a slide 13 (Figs. 6 and '7), which is held in place by gibs II. This slide has upper. and lower outstanding ears [5 between which are received other ears I 6 formed on a plate IT. A pivot bolt I8, vertically disposed, passes through all said ears. The plate is connected to wing W near the front end thereof by a pivot bolt l9. Thus the wing is connected to the slide l3 for universal swinging movement.

The slide l3 may be raised and lowered by any suitable hoisting means, herein exemplified by the differential chain hoist 20, commonly known 5 as a chain falls, which is suspended from an eye bolt 2| fixed in the outwardly projecting arm of cross channel I 2. The lower end of the chain falls is connected to an eye 22 formed on the upper end of pivot bolt I8. Thus the front end of the wing W may be raised and lowered by operation of the chain falls in the usual manner and it maybe .held in its various positions of verticaladjustment by said chain falls.

Near the rear end of truck T is a second upright member 24 of less height (Fig. 1). This member and a corresponding member 24' (Fig. 6) on the other side of the truck are fixed) one to each end of a laterally extending channel iron 25. This channel iron 25 is fixed to the rear ends of the channel irons D'as indicated in Fig. 6.. The member 24 is a channel iron and its flanges are provided. with several sets-of oppositely disposed holes 26 (Fig. 3) whereby a pivotbolt 21 may be placed in the member 24 in various positions of vertical adjustment. This bolt 21 also extends through a lug 28 on the inner end of a brace which is madeof telescoping sections '29 and 29 order to enable the effective length of the brace to be varied. The outer end 29 of the brace is connected by a pivot pin 30 to a member 31 (Fig. 4) which in turn is connected by a pivot pin 32 to a pair of angle irons 32', fixed to the wing W near the rear end thereof. The axes of pins 30 and 32 are at right angles. The brace 29 is thus connected to the wing W and also to member 24 by means of a universal joint.

To elevate the rear end of wing W 'a second hoisting means is used and such means may also be a chain falls 33, as shown. The falls 33 are suspended from an eye bolt 34 fixed to the cross member l2. The lower end of the falls is connected to one end of a flexible member 35 and this extends vertically downward to and around a pulley 36 and thence vertically upward to a pulley 31 and thence horizontally outward to a pulley 38 and thence downward to the wing W to which it is fixed as shown. The pulley 36 is supported by a framework 45 suspended from the channels D. The pulleys 31 and 38 are carried by a crane arm 39, mounted on member In to swing about a vertical axis. As shown in Fig. 5, the jib crane includes an upright 40, the lower end of which is interconnected to the outer end of arm 39 by a brace 41. The upright 40 has fixed thereto upper and lower angle irons 42, which fit between upper and lower angle irons 43 fixed to upright II]. A pipe 44 extends through these angle irons 42 and 43 and forms a pivot for the jib crane.

The flexible member 35 passes through this pipe 44.

The wings are operated in the usual manner by the chain falls or other hoisting means. The invention, however, is characterized in that both sets of falls can be controlled by one man from a single point. The one operator may raise and lower the slide which carries the universal joint connection to the front end of the wing and, without moving from his station, he may also raise and lower the rear end of the wing.

What I claim is:

l. The combination with a snowplow and a motor-driven vehicle for pushing the same, of a wing disposed on one side of the vehicle and pivoted thereto near its front end for universal movement, whereby the wing may be swung toward and away from the side of the vehicle in a horizontal plane and the rear endof the wing may be raised and lowered, and means for raising and lowering the rear end of the wing, comprising a jib crane having its standard mounted on the vehicle to swing about a vertical axis located closely adjacent to a vertical plane passing through the pivotal connection at the front end of the wing and having an arm projecting outwardly from the standard toward the rear end of the wing, a flexible member connected to the wingjnear its rear end and extending upwardly to and thence along said arm of the crane and thence downwardly along said standard thereof, and means on the vehicle to draw in or pay out saidfiexible means, whereby said wing may be raised or lowered from a position near the front and pivoted end thereof.

2. The combination with a snowplow and a motor-driven vehicle for pushing the same, of an upright member fixed to the vehicle near one side thereof, a slide mounted on said member for vertical movement, a wing pivoted near its front end to said slide for universal movement, whereby it may be swung toward or away from the side of the vehicle and the rear end thereof may be swung up or down, hoisting means located near said member for raising and lowering said slide, a crane arm pivoted to said member to swing on a vertical axis close to a vertical plane passing through the pivotal connection at the front end of the wing and projecting outwardly toward-the rear end of the wing, a second hoisting means located close enough to the firstnamed hoisting means to be under the control of the same operator, and flexible means extending from the second-named hoisting means through the pivotal axis of the crane arm and thence along the same toward its outer end and then downwardly to the wing, said flexible means being fixed to the wing near the rear end thereof.

3. The combination with a snowplow and a motor-driven vehicle for pushing the same, of an upright member'fixed to the vehicle near one side thereof, a slide mounted on said member for vertical movement, a wing pivoted near its front end to said slide for universal movement, whereby it may be swung toward or away from the side of the vehicle or the rear end thereof may beswung up or down, a cross arm fixed to said'member near its upper end and projecting beyond the member in one direction to bring one end inoverlying relation with said slide, said cross arm also projecting beyond said member in another direction, a chain falls suspended from the first-named end of said cross arm and operatively connected to said slide to raise and lower the same, a crane arm pivoted to said member to swing on a vertical axis close to a vertical plane passing through the pivotal connection at the front end of the wing and projecting outwardly toward the rear end of the wing, pulleys carried by the crane arm one near each end' thereof, a flexible member fixed at oneend to said wing near the rear end thereof and extending upwardly to and partially around the pulley on the outer end of the crane arm and thence to and partially around the other pulley and thence vertically downward along the pivotal axis of the crane arm, a third pulley mounted on the vehicle and around which said flexible member extends and by which the other end of said flexible member is guided vertically upward, and a second chain falls suspended from the other end of said crane arm and operatively connected to the upwardly extending end of said flexible member.

I GEORGE L. KAESER. 

